Definition
noun, plural: synapomorphies
An advance character state shared among two or more taxa inherited from the most recent common ancestor whose own ancestor in turn is inferred not to have such traits and is derived through evolution.
Supplement
Synapomorphies typify a given set of groups but firmly not all associates of a clade own a similar traits, it might shows a more modified version of traits.
It is a recent traits shared by two directly related groups of organisms like cats and dogs -snakes and lizards which primary showed in most modern shared ancestor.
Excellent examples of this are the lacks of legs in snakes, which belong to class Tetrapoda. A character state that is a synapomorphy for a clade, but for ancestry of this clade is plesiomorphy where it happens to changed in some lineages as underlying synapomorphy
Another case are the exceptionally tailored hind wings originate in all families of winged flies dipteran halteres wherein no other group of insects holding a similar makeup which convergently evolved halteres in place of fore wings.
Word Origin: syn = “with”, “together with” + apo = “away from” + morph = “shape”
See also:
• cladistics
• phylogeny
Compare:
• symplesiomorphy
• homoplasy
Related terms:
• apomorphy
• synapomorphic ( adjective)
Dictionary > Synapomorphy
You will also like...
Freshwater Communities & Plankton
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
Selective Breeding
Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..
The Dinosaurs
Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..
Lotic Communities & Algae
Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..
Abiotic Factors – Water Conditions
A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..
Independent Assortment and Crossing Over
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..